| 摘要 |
PURPOSE:To improve sensitivity and durability, by adding a specified bisazo pigment to a photosensitive layer. CONSTITUTION:A photosensitive layer contains a bisazo pigment represented by formulaIin which Cp is formula II, III, or IV; R5 is H or alkyl; R6 is alkyl; R7, R8 are each optionally substd. alkylor aralkyl or aryl; X is an atomic group necessary to complete an optionally substd. aromatic hydrocarbon or hetero ring; R1, R2, R3, R4 are each H, halogen, or monovalent org. residue. It is preferable to form a photoreceptor consisting of a conductive substrate, a charge generating layer contg. the bisazo pigment, and charge transfer layer in order to raise transfer efficiency of a charge carrier generated by light absorption. |
